William Grennon, HHA, CNA, PCA
NPI 1487092318 · Home Health Aide · Gloucester, MA
William Grennon, HHA, CNA, PCA is a Home Health Aide provider in Gloucester, MA (NPI 1487092318).
Provider details
- NPI number
- 1487092318
- Entity type
- Individual
- Primary specialty
- Home Health AideNursing Service Related Providers
- Credential
- HHA, CNA, PCA
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Nursing Service Related Providers
- Chore Provider372500000X
Nursing Service Related Providers
- Adult Companion372600000X
Nursing Service Related Providers
- Day Training/Habilitation Specialist373H00000X
Nursing Service Related Providers
- Attendant Care Provider3747A0650X
Nursing Service Related Providers
- Personal Care Attendant3747P1801X
Nursing Service Related Providers
- Nursing Home Administrator376G00000X
Nursing Service Related Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-13
- Last updated
- 2013-06-13
Frequently asked questions
- What is William Grennon's NPI number?
- William Grennon's National Provider Identifier (NPI) is 1487092318, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Grennon's specialty?
- William Grennon is listed in the NPPES registry with a primary specialty of Home Health Aide (Nursing Service Related Providers).
- Where is William Grennon located?
- William Grennon's practice location on file with NPPES is 424 Heights at Cape Ann, Gloucester, MA 01930-5341.
- What is William Grennon's phone number?
- The practice phone number listed in the NPPES registry for William Grennon is (978) 412-5440.
- Is William Grennon's NPI active?
- Yes — William Grennon's NPI (1487092318) is active in the NPPES registry as of the last update on 2013-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.